Patents by Inventor Ryota USAMI

Ryota USAMI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • AQUEOUS MODIFIED POLYTETRAFLUOROETHYLENE DISPERSION
    Publication number: 20230203297
    Abstract: A modified polytetrafluoroethylene aqueous dispersion having low viscosity at high temperature. The modified polytetrafluoroethylene aqueous dispersion contains a modified polytetrafluoroethylene and a nonionic surfactant, has a modified polytetrafluoroethylene solid concentration of 50 to 70% by mass, is substantially free from a fluorine-containing surfactant, and has a viscosity at 55° C. of 80 mPa•s or lower, and the modified polytetrafluoroethylene contains 0.050% by mass or more and 1.00% by mass or less of a polymerized unit based on a modifying monomer.
    Type: Application
    Filed: March 6, 2023
    Publication date: June 29, 2023
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takuya YAMABE, Emi YAMAMOTO, Yoshihiro SODA, Taku YAMANAKA, Ryota USAMI, Taketo KATO, Tomohiro SHIROMARU, Yasukazu NAKATANI
  • POLYTETRAFLUOROETHYLENE AND STRETCHED BODY
    Publication number: 20210221992
    Abstract: A polytetrafluoroethylene having a breaking strength of 10.0 N or more and a thermal instability index (TII) of 20 or more. Also disclosed is a stretched body including the polytetrafluoroethylene.
    Type: Application
    Filed: July 23, 2019
    Publication date: July 22, 2021
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Taketo KATO, Yohei FUJIMOTO, Kenji ICHIKAWA, Hiroyuki SATO, Ryota USAMI, Yoshinori NANBA, Hirotoshi YOSHIDA, Kengo ITO, Chiaki OKUI, Masamichi SUKEGAWA, Taku YAMANAKA, Yosuke KISHIKAWA, Hirokazu AOYAMA, Satoru YONEDA, Sumi ISHIHARA, Masahiro HIGASHI, Akiyoshi YAMAUCHI, Shinnosuke NITTA, Marina NAKANO
  • Gas separation membrane, gas separation module, gas separation device, and gas separation method
    Patent number: 10040035
    Abstract: Provided are a gas separation membrane which includes a gas separation layer formed to include a polyimide compound and in which the polyimide compound includes a repeating unit represented by the following Formula (I), a gas separation module, a gas separation device, and a gas separation method using the same. In Formula (I), R represents a group having a specific structure. R3 represents a specific substituent group. A1 to A3 represent a hydrogen atom or a specific substituent group, but all of A1 to A3 do not represent a hydrogen atom at the same time. In this case, at least one of R3, A1, A2, and A3 represents a specific polar group.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: August 7, 2018
    Assignee: FUJIFILM Corporation
    Inventors: Ryota Usami, Koji Hironaka, Satoshi Sano, Takeshi Narita
  • GAS SEPARATION MEMBRANE, GAS SEPARATION MODULE, GAS SEPARATION DEVICE, AND GAS SEPARATION METHOD
    Publication number: 20160199790
    Abstract: Provided are a gas separation membrane which includes a gas separation layer formed to include a polyimide compound and in which the polyimide compound includes a repeating unit represented by the following Formula (I), a gas separation module, a gas separation device, and a gas separation method using the same. In Formula (I), R represents a group having a specific structure. R3 represents a specific substituent group. A1 to A3 represent a hydrogen atom or a specific substituent group, but all of A1 to A3 do not represent a hydrogen atom at the same time. In this case, at least one of R3, A1, A2, and A3 represents a specific polar group.
    Type: Application
    Filed: March 18, 2016
    Publication date: July 14, 2016
    Applicant: FUJIFILM Corporation
    Inventors: Ryota USAMI, Koji HIRONAKA, Satoshi SANO, Takeshi NARITA